PATENTED #2806909

Amazing 3-D optical illusion.

A solid world in a small box!!
An excellent novelty, too.

The Japanese version, shown above, is a picture printed on a card with instructions on how to create the illusion.   To make it, all you need is scissors and Scotch tape.
For a science based curriculum, you can use it to teach the basics of the visual information process - how human beings perceive a three dimensional world.
For an art curriculum, it is useful in teaching perspective drawing, of course. Either way, it makes for a very entertaining class in a very small box.
The image on the right is the view when you look in the 3D BOX. The perspecitive drawing looks very solid.

Why? This is designed to be a teaching tool. 

When you look inside...